eBuddy Messenger - Chat on Facebook, MSN, Yahoo!, Orkut (Google Talk), AIM, ICQ & MySpace. Get the most popular free IM app on your mobile. New!: Send pictures from memory.
New in this version (v1.5.0):
•Send any image from your phone to friends

WhatsApp S40 Messenger is a smartphone messenger available for Nokia, iPhone, Blackberry, and Android phones. WhatsApp uses your 3G or WiFi (when available) to message with friends and family. Switch from SMS to WhatsApp to send and receive messages at no cost

Fring is a mobile internet service & community that enables you to access & interact with your social networks on-the-go, make free calls and live chat with all your fring, Skype, MSN Messenger, Google Talk, ICQ, Twitter, Yahoo! and AIM friends